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Market research has shown that at a price of $230, 100 number of plasma TV’s are sold and if the price is reduced to $190, then 200 number of TV’s are sold. Find the equation that represents this demand curve and state in the form of p=mx+b (Slope Intercept Form of a Linear Equation).

  • algebra -


    subtract the first equation frmo the second.

    m= -.4

    now, put that m into either equation, and solve for b.

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